good evening. president of the united states is spending second night at walter reed medical center. while we normally start telling you exactly what we know about his condition, there is so little we actually know, it's perhaps more telling to let you know what we don't know. we don't know why he's taken to walter reed. we know he required supplemental

oxygen to help him breathe yesterday, but we didn't learn that through his doctor. we don't know when the president actually tested positive. he told sean hannity thursday night at 9:00 p.m. he and melania were tested and waiting for results. he announced his positive result at 1:00 a.m. friday morning on twitter. we do not know if this is true. it seems highly unlikely any responsible white house would allow the president to go to campaign events after having close contact with infected by thursday morning. we don't know when the president got infected, when he first got symptoms or his last negative test was. nobody is saying. we don't know if there's been damage to his lungs. the president's doctor was evasive on that topic today. we do know all day, there has been bizarrely conflicting messages from the people closest to the president of the united states. we saw his doctor give a confusing and at times clearly evasive briefing. the first briefing, later his doctor said he twice had

misspoken about the timeline of the president's illness. and then moments after that very briefing, a source identified by "the new york times," mark meadows, the president's own chief of staff, told reporters the next 48 hours will be critical to the president's recovery and his vielgtals overe last 24 hours were, and i'm quoting from "the new york times" and "associated press," mark med co-doimeadows, very co. after being identified by "the new york times" and "associated press" as that source, he made on the record statement far more upbeat. the president posted this video on twitter. it runs for minutes. here it is. >> i want to begin by thanking all of the incredible medical professionals, the doctors, the nurses, everybody at walter reed medical center. i think it's the finest in the world for the incredible job they've been doing.

i came here, wasn't feeling so well. i feel much better now. we're working hard to get me all the way back. i have to be back because we still have to make america great again. we've done an autism awfully go of that. we have steps to go and we have to finish that job, and i'll be back, i think we'll be back soon and i look forward to finishing up the campaign the way it was started and the way we've been doing and kind of numbers we've been doing. we've been so proud of it. but this was something that happened and it's happened to millions of people all over the world, and i'm fighting for them, not just in the u.s., i'm fighting for them all over the world. we're going to beat this coronavirus or whatever you want to call it. and we're going to beat it soundly. so many things have happened, if you look at the therapeutics, which i'm taking right now, some of them, and others are coming out soon that are looking like, frankly, they're miracles, if you want to know the truth.

they're miracles. people criticize me when i say that, but we have things happening that look like they're miracles coming down from god. i just want to tell you i'm starting to feel good. you don't know, over the next period of a few days, i guess that's the real test. we'll see what happens over those next couple of days. i just want to be so thankful for all of the support i've seen, whether it's on television or reading about it. i, most of all, appreciate what's been said by the american people, by almost a bipartisan consensus of american people. it's a beautiful thing to see and i very much appreciate it and i won't forget it. i promise you that. i also want to thank the leaders of the world who are, their condolences and know what we're going through. as your leader, what i have to

go through, but i had no choice because i just didn't want to stay in the white house. i was given that order, stay in the white house, lock yourself in. don't ever leave. don't even go to the oval office. just stay upstairs and enjoy it. don't see people, don't talk to people and be done with it. i can't do that. this is america, greatest in the united states. the most powerful in the world. i can't be locked up in the room totally safe and just say, hey, whatever happens happens. i can't do that. we have to confront problems, as a leader, you have to confront problems. there's never been a great leader that would have done that. so that's where it is. i'm doing well. i want to thank everybody. our first lady is doing very well. melania asked me to say something as to the respect she has for our country, the love she has for our country and

we're both doing well. melania is really handling it very nicely. as you've probably read, she's slightly younger than me, just a little tiny bit. and therefore, we know the disease, we know the situation with age versus younger people, and melania's handling it, statistically, like it's supposed to be handled. and that makes me very happy and it makes the country very happy but i'm also doing well and i think we're going to have a very good result. again, over the next few days, we'll probably know for sure. i just want to thank everybody out there, everybody, all over the world, specifically, the united states. the outpouring of love has been incredible. i will never forget. thank you very much. >> we don't know what time that was recorded or exactly when today. assuming that was today. cnn's john harwood from walter reed. we just saw the president's

remarks. it's been a confusing day to say the least, right after this press conference at walter reed today, where really, the only doctor to try to give, allowed to give any specific details or answer questions was the president's position and he was certainly evasive, but then the chief of staff mark meadows contradicted the doctors according to "the new york times" and "associated press kwtspress ," say the next 48 hours will be critical. what more can you tell us about that? >> well, anderson, sean conley's briefing, that's the president's white house doctor, was so comically evasive, he wouldn't talk about how high the president's fever was, whether he'd gotten supplemental oxygen. since confirmed he did, whether or not he had experienced lung damage. they said, we're monitoring that. the reporter said, what have you found? i'm not going to get into those

details. i think the white house felt plainly that they had to come out and get some believable account of why the president had gone to walter reed on friday and so you had that background statement about how concerning the vitals were yesterday. about how the next 48 hours were critical, and i got to say, anderson, in that video from the president, he provided some candor. he said, you could tell the uncertainty in his voice where he said i'm starting to feel good. but we've got to watch over the next couple of days and that's when we'll know for sure. i thought that was a more realistic on the record note of candor from the president himself that we got from the doctor. >> can you just explain how the white house doctor had to clarify the timeline of the president's diagnosis? because it's really critical and the fact we still do not know when the president's last negative covid test was, when did he actually test positive

and we simply don't know, really, the timeline. explain how the doctor had to clarify? >> reporter: anderson, first of all, he declined to say when the last negative test for the president was and we know that's important to try to figure out when the president may have acquired the virus and where he is in the course of his disease, but more significantly, he really confused the timeline of when the president was actually diagnosed with having covid and he did it with a suggestion, initially, that put the timeline of his diagnosis back to wednesday. take a listen to this. >> 72 hours, the most critical in determining the likely course of this illness. >> when was the positive diagnosis made? wednesday? >> so thursday afternoon following the news of a close contact is when we repeated

testing and given clinical indications that added more concern, and that's when, late that night, we got the pcr confirmation that he was. >> what he said there was that they got confirmation of the president's diagnosis on thursday night, but the original 72 hours would have put it back to wednesday. subsequently, after people observed that, well, if he was diagnosed wednesday, then he knowingly, knowing he had the coronavirus, went to the fundraiser, exposed a lot of people to potential infection, they said, well, what conley said was, when i said 72 hours, what i really meant to say was the third day of the situation that we're in, the first day being thursday, that is thursday evening, and second day friday and the third day today. but he certainly created a whole lot of questions about exactly when the president may have been

infected and when he may have been confirmed to have been infected by the test. >> john harwood, chief medical correspondent, and david axelrod, former top adviser, president obama. sanjay, this timeline, you and i have been talking about this since the middle of the night. thursday overnight to friday morning. the doctor, dr. conley, as john just pointed out, has really only now made it only more confusing. the president said to sean hannity he was tested thursday late in the day and 9:00 p.m., still waiting for their results. the white house knew the test was positive thursday morning. we know that and people were pulled off the trip to new jersey with the president because of fears they had been around hope hicks, as the president had. either the white house did not choose to test the president of

the united states as soon as they found out hope hicks had been very close with last several days, had tested positive, which seems almost criminally negligent and completely reckless or he was tested and they allowed him to go. dr. conley said that thursday afternoon is when we repeated testing. i don't know why he said repeated testing, it indicates there was another test, i guess, earlier. but we don't know when that might have been, and he said pcr confirmation. how long would it take to get pcr confirmation of a covid test for the president of the united states? >> can you hear me? >> we got you now. >> we know that the system they use in the white house is the pcr abbott rapid test. so that's a machine that can actually do that sort of pcr test within 15 minutes. now, you know, depending how

much machines you have, if you have four people, it could take an hour but for the president, they could get a result fairly quickly. i wasn't quite sure by that time, it clearly doesn't track one with the other. i agree with you, anderson, it would seem very unlikely they wouldn't immediately test, and once they know that he's had a close contact, the president, with someone diagnosed with covid. one thing i want to point out, the video he was showing of dr. conley giving the original statement saying it's been 72 hours since the diagnosis, when he's saying that, dr. jonathan ryaner poi er reyer er ier i er ier i er ier statement he was reading. he was reading a prepared statement that said 72 hours since the diagnosis. he wasn't freelancing there, and as dr. riner points out, when the statement is there, it's

vetted. 72 hours is what that said and i watched the press conference carefully. asked about it once and until that video said, the confirmatory test was thursday. it really did sound like what he meant to say and what he said and what the prepared statement read, was that the president was diagnosed on wednesday. 72 hours ago. so, you know, we may never mkno the truth, but i think that's what the statement was intended to convey. >> it's entirely possible based on his statement of 72 hours and his statement saying we repeated testing thursday afternoon that the president was, in fact, tested wednesday night when hope hicks had already shown symptoms, isolated on air force one. got off separately. and they repeated a test thursday afternoon. medically, that is possible, correct? >> yeah. it is possible. i mean, i guess the question is, if the first test showed that it was positive, that he was, had

the coronavirus, which again, is what that statement, that the doctor read really did convey, then obviously, he should have been isolated at that point. the doctor was reading a prepared statement pored over if they read it and then playing catch-up. i meant three days. thursday, friday, saturday. i speak to patients who are giving, used to speaking with a different, sort of specificity when you talk to families, trying to describe their loved ones care, what they were doing today on behalf of the president to the nation. there was specific language there that was prepared. >> obviously, the white house isn't known for transparency.

work in the white house, a statement like that especially given the sensitivity of this, would not have gone out without someone reviewing it from the white house other than the doctor. it is really peculiar that the number was in there and nobody caught it. why not be transparent about all of that. ridiculed with the mask and went to the rally on wednesday night.

reported to have fallen asleep on the plane coming back from the rally which everyone noted was unusual for him and the doctor travels with the president, so they would have noticed that as well. but be that as it may, this president is invested in telling the country that we're through this, we're getting through this. we're at the end of this, we're about to, you know, round the bend on this. how dramatic it would be, had the coronavirus and waiting to see if he presented with symptoms, maybe they thought they never had to reveal that he had the coronavirus. i don't know if that's true and i mean, twitter may be lighting up right now with people who are outraged by this suggestion but frankly, not beyond the pale this white house would do that, but there has to be an explanation for why they have

been so furtive about all this. >> does it make, obviously, there's a push and pull of not wanting to let on how badly the president may be doing or the details of the president's physical condition. is there any reason to not let people know when he tested negative, when he tested positive? exactly the details? >> if he tested, if he tested positive before thursday, there's plenty of reason. because he went to an event on thursday that he obviously shouldn't have gone to. and i think that's the issue. >> yeah. sanjay, john harwood. >> when the president caught it and why it matters so much. and how having two infected members of the senate judiciary committee complicates confirming judge amy coney barrett to the supreme court. woo! you are busy...

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message from walter reed, the president said he might want to let the rest of the administration know that. talk about the confusion over when the president may have been infected when tested and when he knew the results. first revealed his covid-positive status, but 1:00 a.m. yesterday, friday, early friday morning, 1:00 a.m. on twitter. we've been discussing, his senior aide hope hicks was showing symptoms wednesday night. it's possible that she, the president and others, may have been infected as far back as the white house event last saturday. farther back you go, the more people affected. so the timeline matters here and a lot of people would need to be informed they had come into contact with somebody which is why it would be good to know when the president actually became positive and infectious. jim acosta joins us now from the white house. what is the latest explanation from the white house about when president trump first tested positive? >> yeah, anderson. i talked the a white houo a whi

official a short while ago. after the bedminster trip on thursday, he was feeling symptoms. given one of the rapid tests we've talked about so much. tested positive for that and the more in-depth pcr test administered, tested positive on that as well and then that is when things started to deteriorate for the president and he became infected with the coronavirus and started to show symptoms from the virus. as we know, over the last 24 hours, we've gotten conflicting information from this administration. you know, the white house doctor went out today. sean conley, and painted this rosy picture of the president only to be contradicted by white house official identified to be the chief of staff mark meadows and a senior white house official told me earlier today that one of the reasons why they were so concerned about the president and one of the reasons why they thought he needed to make the trip to walter reed, there were some very serious

concerns yesterday, the bout with the coronavirus could take a turn for the worse. >> i don't understand how that's possible that they allow the president to go to a fundraising event for people who paid a lot of money to meet him, they pulled staffers off the trip to new jersey because hope hicks tested positive. just as a national security issue, on the health of the president, wouldn't they have immediately tested the president? i mean, if they didn't, it just seems incredibly irresponsible. >> well, anderson. you have to understand that there's a baseline attitude over here at the white house that they just don't take the coronavirus seriously and this is, you know, the mentality a few days ago. things have changed since then but the mentality a few days ago, the baseline attitude is that they did not take the coronavirus seriously as just about everybody else across the

country. and obviously, attitudes have changed in the last 72 hours, but hope hicks, as you were just saying a few moments ago, was showing symptoms after the president's trip to minnesota when they were on their way back on air force one back to washingt washington. the next day, she tested positive for the coronavirus and despite being in close proximity to hope hicks. that just goes to show you, you know, the recklessness of how they've been dealing with this all along. anderson, i'll take you back to something i heard on the night the president gave this speech at the convention here on the south lawn of the white house when a senior white house official said to me, we're all going to catch this thing eventually. that has been the mentality, anderson, throughout this entire saga. the coronavirus saga over here for the white house. it's inexplicable, it's inexcusable, it's dangerous, but it is how they have been behaving this entire time. that has changed now, the president, you know, has a very

serious illness. how much that changes, we'll have to wait and see. >> briefly, do we know when hope hicks tested positive? i know they knew thursday morning. did she get tested wednesday night and thursday morning? >> we believe thursday is when she tested positive for the coronavirus. keep in mind, anderson, that rally in minnesota wrapped up after 10:00. i was at that rally. and then they flew back on air force one, so presumably, the test happened the following morning, and that is when they still made this determination for the president to go to bedminster and keep in mind, we pressed mark meadows on this yesterday, and kayleigh mcenany yesterday. the white house operations made the decision. they know how the president feels about this. white house operations is following the president's lead. >> appreciate it. chief political correspondent, dan bongino. one extremely important answer for me. when was the president's last negative test, again, shocking,

according to chris wallace, revealed this. actually wasn't tested right before the debate. they got there too late and chris wallace said it was basically honor system. >> we do not know the answer to that question and it's such an important question. and even the people who were in the debate prep meetings, for example or others who came into the white house. if they're going to be close to the president, they were tested. the people in the debate prep meetings, for example, last weekend. >> who, by the way, tested positive. chris christie, kelly conway. >> the majority of them, exactly. and they have their belief that the president was tested every day, therefore, they were all safe. and they weren't. because, you know, we don't know whether the president was tested every day. and what we do know now is that, you know, well, we don't know. but one of the questions out there right now, anderson, is

one that david axelrod posed. they got a result they didn't want to talk about and then they didn't want to disclose it and that's where we are where we are. the fact we have to ask the question is because they have been so close mouthed, rather, and opaque about what is going on. >> well, i mean, not only that. the president's doctor says one thing and then according to "the new york times" and "ap" tells background reporters, last 24 hours very concerning and the next 48 hours are going to be critical. >> and that happened, apparently, the minutes after the doctor was speaking. it was totally contradictory. but the thing i think that is also important to keep in mind is that so many people in and around the president, in and around the people who we know

are positive, they didn't have a chance early on to protect themselves and to protect their families because, "a," the white house wasn't forthcoming, and "b," when they did find out what was going on, they really didn't do a robust contact tracing episode at all. just for example, giuliani, this is rudy giuliani. he didn't even get a call to say who were you in contact with? chris christie didn't even get a call to say, who were you in contact with? make sure that you get the message out, like, it's supposed to be that. that didn't even happen. >> look, he stood on the stage with vice president biden and the campaign didn't get a call and he could have been positive then and none of the family were wearing masks. we're going to take a short break, dana bash, thank you, with all the moving parts. the coronavirus cases threatened to detail the judiciary committee confirmation hearings for judge amy coney barrett. update from capitol hill next.

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as president trump continues to be hospitalized for coronavirus, democrats in the senate judiciary committee asked for a delay in the confirmation hearing for judge amy coney barrett, citing two members who also received a positive diagnosis. mitch mcconnell said he wants all back to work by october 19th. what could be a rapidly shrinking timeline. if anyone can't come back until october 19th, how big of a problem is it for this confirmation going through or if >> reporter: in the midst of a high wire right now, which is kind of wild. 72 hours ago, this nomination for u for amy coney barrett, everybody expected to move through very quickly and knew they had the

votes and had questions about attendance. the fact that the senate is coming back on october 19th underscores the problems that mitch mcconnell is having. the senate was supposed to be back on monday and instead, basically delaying everything for two weeks before they can come back and the reality for mcconnell, it's a numbers game. the hope is that the senators who tested positive will be back but very limited margin for error, already two of his 53 republican senators don't want to move forward on the nomination for amy coney barrett until after the election. that means he can afford to lose one more senator to sickness and be able to approve the nomination on the senate floor. mitch mcconnell sent an email, one about the delayed timeline in terms of coming back but making clear, they need to be careful. they concluded the email by saying, wear a mask, stay distant, come back safely. not just a matter of public health for republicans but a matter of con confirmifirming t nominee.

>> isn't it known when the two who tested positive when they could return? >> the two senators, tom tillis of north carolina, mike lee, also on the judiciary committee from utah plan to quarantine for ten days and expect to be back when the hearings for amy coney barrett start on october 12th, even though the senate not in session and full steam ahead for the hearings. wild card is this. i think we're aware of this now. we just don't know how this virus is going to go, right now, both lee and tillis said through statements that they're dealing with minor symptoms right now. both said they're resting comfortably and feel okay at this moment but just don't know how things are going to go or turn over the course of that period of time. right now, the expectation is that they will be back and they will need to be back in order to get judge barrett's nomination out of the committee by the end of the week of october 12th, and perhaps, that committee vote on october 22nd, but again, it's a wild card right now and there's one other pretty crucial wild card. they don't know if anybody else is going to get sick.

a lot of very, very unsettled republicans right now. not just from the nomination perspective, but public health perspective, zblaern perspective, anderson. >> 30 seconds left. reporting how some are feeling about the white house ? >> reporter: extreme frustration. they try to be cognizant of the reality of the moment and then get tested, told they can take their masks off. they feel like we need to bubble wrap ourselves right now and if that's the case, we can't interact with the white house as one republican aide told me right now, it's just she sheer irresponsibility. with all the confusion surrounding president trump's medical condition, it's important to note this isn't the first time supporters of the president tried to hide facts about a president's health. i'll talk about what we're witnessing up next.

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aides and supporters tried to hide illness from the public and the press. far less complicated times, reporters willingly went along. declining health near the end of world war ii. no better presidential historian to ask about all this than doris goodwin, thank you for being with us. >> glad to be with you. >> he's certainly not the first president to experience a health crisis. not the first time the american public has had questions about a president's health. how does history judge other administrations when it comes to transparency about a president's health? >> always when the presidential health was not revealed directly to the public, the rationale is the public will panic, we can't do it. looking at cleveland, having secret surgery for jaw cancer. they'll say, the stock market will go down, can't let the public know. on the friend's yacht part of the jaw removed and never know about it yet. wilson in the midst of the third wave of the spanish flu, try to

persuade the league of nations and a severe stroke. that's not regarded well for wilson or his administration at the time. fdr in the middle of world war ii is diagnosed by a young cardiologist with severe cong t congestive heart failure. his own doctor says, don't even tell fdr what you found. don't say anything to the public and he goes out and says, it's just bronchitis, he'll be fine. never a good thing because democracy needs the people to know and i think they can face the truth. they have the wherewithal to do it and then they can trust the people telling them what they're not supposed to know. >> in the president's word, it's critical, timetables are the spine of history. given that, i wonder what you make of what we've been seeing the last two or three days. >> the conflicting timetables, i think, it's just a minuscule example of the fact that we've lost in many ways, trust in the president's word. and it's the most important thing a president has. think of it, the president is the person who tells us we need

to go to battle, why it's important to do so. roosevelt, fdr had to tell people why rationing but essential to be an equitable distribution of resources. if you don't believe the timetable, who knows what's when and the fact we have a conflicting timetable raises the question of what it was of what the president knew in february about the seriousness of the virus but didn't think the public could hear it, thought the public would panic. same thing all over again. >> so interesting though because all along, throughout this administration, from the very beginning, people have been saying, you know, it's critical that you trust the president because when there's a crisis and whenever there's a crisis, you'll need to be able to trust his word and we're now seeing the results sewn in the last several years. >> that's right. if they're saying it's critical to trust the president, it's

critical that the president trusts you. that's the essential thing. you know, in september of 1862, my mind always goes back to the past when abraham lincoln announced the emancipation proclamation and a huge blowback. lost in the midterms, thought it was a bad idea, prolong the war. people start questions, will he keep his word because he promised it would be issued in january of 1863. and frederik douglas, his critic said, if we trust anything in abraham lincoln, haye's a man w keeps his word. keeping your word and your word is your bond is the most important resource a president can have. >> you point to the issue of face masks as an example of the power of setting an example. i don't know if the president now getting sick could change that, could make people start to wear masks or he himself start to wear a mask, change his

message. he wasn't wearing a mask in his address in the video he put out. i don't know who was shooting that video. i don't know how many people were in the room. i assume they were in full protective equipment. i certainly hope they were. >> yeah, it's a really interesting question. because the president of notre dame apologized for the fact he wasn't wearing a mask at the rose garden ceremony when he was telling the people in his community to do so. so the open question is, will president trump have learned from this experience and will he now acknowledge the importance of wearing masks? but even if he doesn't do so, that image of the rose garden ceremony and that numbers of people so close to each other now, the numbers of people who got the virus will be permanently imprinted, i think, on our minds and sometimes, images can be more powerful than words. think of the image of what the brutal attacks on the selma marchers and how that mobilized the civil rights community and the voting rights act or the image of george floyd being murdered mobilized the black lives movement.

i think the image of the circles of the people who got the virus and who knows, if it radiates to them and families and escalating other numbers of people. that will be powerful as a reminder, hopefully, to the supporters of not wearing masks of the importance of masks and social distancing right now. >> doris goodwin, great to have you on. thank you so much. >> i'm glad you did. thank you very much. >> i love hearing about history. few ahead, few masks. one crowded rose garden. was this a super spreader event that led to the coronavirus crisis? dr. sanjay gupta is with me next. struggling to clean tough messes with wipes? try mr. clean magic eraser sheets. just wet, squeeze and erase icky messes in microwaves and on stovetops for an amazing clean, get the power of mr. clean magic eraser in disposable sheets.

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i'm voting 'yes' on prop 19. nineteen limits taxes on seniors. it limits property tax on people like me. nineteen limits taxes on wildfire victims. it says so right here.

if 19 passes, seniors can move closer to family or medical care. i looked at moving but i can't afford the taxes. will you help california's most vulnerable? vote 'yes' on prop 19. they do one of the most deven in normal times.s, our frontline health care workers. and when these heroes lack the resources they need, that risky job gets ten times harder. prop fifteen makes corporations pay their fair share. to invest in our communities, in our clinics, in the essential workers who treat everyone- rich, poor, and in-between. whether it's this pandemic or the next health crisis, vote yes on prop fifteen. for all of us. again, our breaking news,

trump advisor chris christie is now hospitalized after testing positive for coronavirus. christy says he's feeling good, and has, quote, mild symptoms. and the hospital stay is a precautionary measure, he says. christy and several others who also have the virus attended last saturday's event at the white house where president trump announced his supreme court pick gathering with few mask, no social distancing leading to questions could this be ground zero where this all started? more from our own san jay gupta. >> reporter: what you're looking at is the origins of a likely super spreader event. at least eight people including president donald trump himself are now infected. and that is among those who have had the ability to actually get tested. you can't see the virus, but what is happening during a super spreading event? >> it's a very rough analogy, but if we think of a camp fire and say that's a person who's infected and releasing virus, it's not like it's the ring around the person that's actually going to be the risk. it's those that are on the side where more of the virus is being

projected either through talking or through the breeze, the air that's blowing it there. >> reporter: but it was also these moments that caught cnn medical analyst aaron bromadge's eye. >> when they're all finished and coming up and shaking hands and saying congratulations, that's where if i was a betting person i'd be putting my money on where this occurred. >> reporter: we know that the safety protocol for the event was to test anyone in close proximity to the president, but it wasn't required for everyone attending the ceremony. and it clearly wasn't foolproof. again, take a look here where the people diagnosed as positive were sitting. not next to each other, which leads us to again look at what happened right before and right after. former white house counselor kellyanne conway closely leaning in to speak with attorney general william barr. notre dame president father john jenkins closely talking to a group of people with no mask.

lots of people closely interacting with their guard down. it can be difficult to pinpoint these super spreader events. this one ceremony, though, is giving us a look at the anatomy of how it happens all the time. not just here but anytime people aggregate together in large groups in the middle of a pandemic. >> there's no doubt that there has been transmission at the protests, the political rallies. it's just a fact that the virus doesn't discriminate. just because we haven't documented it doesn't mean it hasn't happened. it's just that we've got an event now that is very visible, well documented, well-tested, and we're seeing the outcome from it. >> sanjay joins me now. sanjay, can you just tell us the typical time line of when someone is infectious, after, you know, becoming infected and why this event could have been during that time period? >> reporter: yeah, so this is really important.

after you're expossessed ed to virus you're not going to develop a detectable level of the virus for some time. the virus starts to replicicate. that's the incubation period and can last up to 14 days but typically around five days. and if people are going to develop symptoms it's around that time as well. i think what's really important to your question is that bottom line, the purple line. even in the few days before you develop symptoms, so let's say the president develops symptoms on thursday, two to three days before you develop symptoms is when you're likely to be infectious and perhaps even most infectious, contagious according to some of these studies. so you back up the calendar to thursday, wednesday, tuesday perhaps in terms of when someone again presymptomatic but most likely to spread. >> shouldn't anyone who was at the event be tested? >> yeah, it's a good question.

i think when i look at that video of the event and look at that now with a few viral dynamics experts, when ulook at them seated for a period of time you're thinking about what constitutes a close contact. how close they are, obviously. and it looks like they're within 6 feet obviously even row to row, not just next to each other. and then, anderson, also duration. longer than 15 minutes is typically considered long duration. so if you're sitting next to someone with covid for a long period of time, those people should be tested. >> a lot more ahead. to get an update on the president's condition as those closest to him including his doctors sow confusion.

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good evening. it's 9:00 p.m. here in new york and at the walter reed medical center in bethesda, maryland. despite a taped message from the president we still do not know the plain facts of his condition. so far today we've his doctor give a briefing that may have actually subtracted knowledge from the world, and laying out a time line he later retracted. we heard from a source reported by "the new york times" and associated press to be chief of staff mark meadows who described the president's condition in very sober tones. far worse than the doctor described them. then we saw him go on record with a far more